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Cisco BTS 10200 Softswitch Troubleshooting Guide, Release 5.0.x
OL-8723-19
Chapter 14 General Troubleshooting
Protocol Troubleshooting
Maintenance of a Call Agent Connected to an Integrated Services Digital Network Trunk Group
During system operations, the operator can use the CLI
control
command to switch the Call Agent into
one of two states:
•
ACTIVE-STANDBY
•
STANDBY-ACTIVE
When the control command is entered on a Call Agent connected to an ISDN trunk group (D channel),
the Call Agent switchover time is approximately 20 seconds. During all but the first 6 seconds of this
switchover time, the ISDN D channel is temporarily down. However, the D channel comes back up, and
the ISDN trunk group automatically returns to INS, when the switchover completes.
Note
This switchover process does not have any impact on stable calls.